Gasket for pipe-couplings.



/ PATENTBD JUNE 1s. 1907.

T. PENDERGAST.

GASKET FOB. PIPE GOUPLINGS. nrmourox Huh A23. 1a. 190e.

INVENTOR pers fitted therein,

the inner marginal portion only UNITED STATES PATENT OFFICE.

THOMAS PENDERGAST, OE LANCASTER, PENNSYLVANiA, ASSIGNOE OF FIFTY-ONE ONE-HUNDREDTHS To JOHN HERTZLER, OF LANCASTER,

PENNSYLVANIA.

GASKET Fon elPE-oouPtlNGs.

Specification of Letters Patent.

Patented June 18, 1907.

Application mea April 13,1906. Serial No. 311,574.

T0 all whom, it may bnee'rn:

Be it known that I, THOMAS PENDERGAST, a citizen of the United States, residing at Lancaster, in the county `of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Gaskets for Pi e-Couplings; and I do hereby declare the fol owing to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to gaskets or packing-rings for train-pipe or similar couplings wherein a pair of ru ber rings or gaskets are usually employed in opposition inthe two coupling-heads, in order to. make a steamtight joint.

The obj ects are to stiflen and reinforce the rubber rings of the coupling, so as to expand them firmly and rigidly in their seats or recesses; to prolong the life of the gaskets by providing metallic contact surfaces therefor, and yet insure a steam-tight joint, and to preserve the elasticityor yielding properties of the packing.

In the accompanying drawings, which form a part of this specification: Figure l is a longitudinal vertical section of a train-pipe coupling, invention. Fig. 2.1is a perspective view of one 'of the rubber rings, without its metallic lining or innerreinforcing ring. Fig. 3 is a ective view orcing ring. Fig. 4 is a sectional per; View of thecomplete metallic lined gasket.' Fig. 5 is a sectional, perspective View of another form of such gasket. Fig. 6 is a sectional perspective view of another form of metallic ring or lining, having a narrower to flange or margin. v

rein spective The il ustrated .gasket ,comprisesy an ordi! nary thick rubber or other elastic rings), with a cylindrical sheet-metal ring or ing b the latter having atop flange c overlyin of the topA ace of the rubber ring,and having asl htly spread or flaring bottom edge d whic sets lwithin the rubber ring and bears or embeds more or less in the rubber, holding the parts in proper relation, the body of the rubber ring being embraced between thetop flange c andthe rib or bottom edge d of the metal lining, the rubber ring-being stretched over the metal ring to properly inclose the fitted with gaskets embodying my of the said metallic lining orl same. By this construction, the gasket presents an annular metallic face c for Contact with the similar metallic face of the opposing gasket in the pipe-coupljng,saving frictional wear and deterioration incident to contact of rubber faces, the rubber being furtherprotected by its interior lining; whi le at the saine time,`the base of the gasket being exposed rubber, the usual yielding qualities are maintained, due tothe compressibility or elastic- `ity of the rubber ring between its base and the ange c of the metal ring, 'so that the rubber ring can' be tightly fitted to its seat or in its socket, While, the requisite yielding allowed when the coupling members are' clamped or compressed together. Moreover,i'since.the top ange c of the metal ring .b covers only an annular portion of the top face'fof the'rubber ring, the compression .or yielding of opposing gaskets under pressure crowds upthe rubber around said flange a,

thus (givinga packing of metal to metal surv,edf-by rubber to rubber,fproviding' metallic'contact faces and yet insuring a tight joint around the same.4 This feature isillustrated in Fig.A 1, where two of the gaskets as above described are shown seated in annular sockets e around theopposng openings in the two coupling members g., In this case, the

' Arubber rings or gaskets proper are formed with outer base lflanges f, shown in Figs. 1, 2 and 4, which are seated in the. said annular sockets e of the coupling members. In Fig. 5, another form of gasket is shown, in which the rubber ring is made without such annular flange, this style of gasket being designed to fit within an annular seat around the opening in its coupling member. Besides protecting the rubber gaskets, the rings reinforce the gaskets, and expand the same firmly and rigidly in the recesses of the coupling, thereby preventing an possible chance' of the gaskets becoming oose or falling out of the coupling when uncoupled. l

` In the operation of coupling the two'parts of the coupler,the gaskets are turned on the exposed. faces of the gaskets, `and wear and tear and consequent leakage is prevented ICO,

by the contact between the metal parts.

ber faces of the gaskets, sothat the said rubber faces are pressed tightly together, mak

ring end metal lining-broadly, What I claim` as my' invention and desire t secure Vby Letters 'Patent of the United'A States is: l

1`. A gasket for train-pipe or similar couplings', comprisin a ring of rubber or other :elastic material ilxavjng an annular. metallic 4facing on one marginal portion only of the face of said ring, leaving a surrounding exosedrubber ortion, the body of said rin eing yieldab e or elastic; whereby two o such rings in opposition in a coupling have vmetallic contact faces surrounded by rubber -which under pressure crowds around said contact faces to make a steam-tight joint..

` V2. A gasket for train-plpe and similar couplings, comprising a `thick rubber or other elastic ring, and a stiff reinforcingfring or metallic lining secured only i'nthe inside of .s aid rubber ring and having a top flange overlying the inner marginal portion only of the .face of said rubber ring, leaving the body of- .said rubber ring clastlc and leaving an an- 'nular exposed a l flange,v substantially as described. y

3; A gasket for train-pipel and similar couplings,` comprising a thick rubber` or other l elastic ring, and a stiff metallic lining or re- .Clrectons vlnv Letters Patent' No., 857,106.

the Patent osie.

` e [sean] ghaskets howeverl have been unyielding. s/I

ce ofl rubber around said..`

Signed and this 16th day ofJuly,A.'D.,1907.

inforcing ring itted therein having an outset bottom edge or rib embedding in the rubberv inside the rubber ring' and having a narrow' gaskets comprising a cylindrical, sheet-metal A yring havinga narrow top flange and a Haring bottom edge, said ring adapted to be secured inside of a rubber' or elastic gasket,v substantially as described.

6. The'combinatiomin a train-pipe coupe' ling, of the coacting coupling-heads havin'g seats for opposinggaskets, and the gaskets fitted therein consisting of rubber` or other'- elastic rings; having'. inside metallic Vreinl'o'rc-- ving ring wlth' top flangesoverlyingg thefinf ner marginal portionsv only of' the faces of said elastic rings, whereby in bringingitheV coup'- lin -lieads together the gaskets lpresent'metal ic contact faces, .and`when the`couplingheads are clalnped or drawn togethe'rthe surrounding rubber portions of the rings are pressed closely togeth'eraround said metallic vlianges, making a fluid-'tight joint.'

-In testimony whereofl 'affix' my signature, in presence of two witnesses. ,l f

. THOL/[AS PENDERGAST. VVitnesses:

' REDMOND CONYNGHAM,

E. B. GROFF.

n i hereby lmissed hat in Letters Panam No. 857,106, grantee Jupe 18,1907, upon the application of Thomas Pendel-gast, of Lancaster, Pennsylvania, for anA improvement in Gaskets for Pipe-Couplings# errors appear in the printed specica.- tion requiingorrection, as follows: On page 2, line 4 ,"the word and should read `end; line IO; same page, the word en'd should read @miranti in line.62, same page, the word ring should read rings; alnd that the said `Letters Patent should be read with these corrections therein that the same may conform to the record of the case in i C C iILLiNGs, AActing Commissioner of Patents.

ring end metal lining-broadly, What I claim` as my' invention and desire t secure Vby Letters 'Patent of the United'A States is: l

1`. A gasket for train-pipe or similar couplings', comprisin a ring of rubber or other :elastic material ilxavjng an annular. metallic 4facing on one marginal portion only of the face of said ring, leaving a surrounding exosedrubber ortion, the body of said rin eing yieldab e or elastic; whereby two o such rings in opposition in a coupling have vmetallic contact faces surrounded by rubber -which under pressure crowds around said contact faces to make a steam-tight joint..

` V2. A gasket for train-plpe and similar couplings, comprising a `thick rubber or other elastic ring, and a stiff reinforcingfring or metallic lining secured only i'nthe inside of .s aid rubber ring and having a top flange overlying the inner marginal portion only of the .face of said rubber ring, leaving the body of- .said rubber ring clastlc and leaving an an- 'nular exposed a l flange,v substantially as described. y

3; A gasket for train-pipel and similar couplings,` comprising a thick rubber` or other l elastic ring, and a stiff metallic lining or re- .Clrectons vlnv Letters Patent' No., 857,106.

the Patent osie.

` e [sean] ghaskets howeverl have been unyielding. s/I

ce ofl rubber around said..`

Signed and this 16th day ofJuly,A.'D.,1907.

inforcing ring itted therein having an outset bottom edge or rib embedding in the rubberv inside the rubber ring' and having a narrow' gaskets comprising a cylindrical, sheet-metal A yring havinga narrow top flange and a Haring bottom edge, said ring adapted to be secured inside of a rubber' or elastic gasket,v substantially as described.

6. The'combinatiomin a train-pipe coupe' ling, of the coacting coupling-heads havin'g seats for opposinggaskets, and the gaskets fitted therein consisting of rubber` or other'- elastic rings; having'. inside metallic Vreinl'o'rc-- ving ring wlth' top flangesoverlyingg thefinf ner marginal portionsv only of' the faces of said elastic rings, whereby in bringingitheV coup'- lin -lieads together the gaskets lpresent'metal ic contact faces, .and`when the`couplingheads are clalnped or drawn togethe'rthe surrounding rubber portions of the rings are pressed closely togeth'eraround said metallic vlianges, making a fluid-'tight joint.'

-In testimony whereofl 'affix' my signature, in presence of two witnesses. ,l f

. THOL/[AS PENDERGAST. VVitnesses:

' REDMOND CONYNGHAM,

E. B. GROFF.

n i hereby lmissed hat in Letters Panam No. 857,106, grantee Jupe 18,1907, upon the application of Thomas Pendel-gast, of Lancaster, Pennsylvania, for anA improvement in Gaskets for Pipe-Couplings# errors appear in the printed specica.- tion requiingorrection, as follows: On page 2, line 4 ,"the word and should read `end; line IO; same page, the word en'd should read @miranti in line.62, same page, the word ring should read rings; alnd that the said `Letters Patent should be read with these corrections therein that the same may conform to the record of the case in i C C iILLiNGs, AActing Commissioner of Patents.

It is hereby certified that in Letters Patent No. 857,106, granted June 18, 1907, upon the application of Thomas Pendergaet, of Lancaster, Pennsylvania, for an improvement in Gaskets for Pipe-Couplings," errors ppeo.;l in the printed specification requiring correction, as follows: On page 2, line 4, the word and should read '6nd,' line 10, same page, the word en'd should read and, and in line 62, same page, the word ring should read rings; and that the said Letters Patent should be read `with these corrections therein that the same may conform to the record of the case-iu the Patent Oce. r

Signed and med this 16m day of July, A. D., 1907.

{SML} C. 0L BILLINGS,

Acting Commvsmer of Patenu. 

